[INFO] cloning repository https://github.com/alihsaas/math-expression-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alihsaas/math-expression-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falihsaas%2Fmath-expression-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falihsaas%2Fmath-expression-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ea911b1b45abd671b2ae915b7873c787ce889bb
[INFO] testing alihsaas/math-expression-interpreter against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falihsaas%2Fmath-expression-interpreter" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alihsaas/math-expression-interpreter on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alihsaas/math-expression-interpreter
[INFO] finished tweaking git repo https://github.com/alihsaas/math-expression-interpreter
[INFO] tweaked toml for git repo https://github.com/alihsaas/math-expression-interpreter written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/alihsaas/math-expression-interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4eb33f2e75ad2ef13a38e98b8658e8a0700863e3c1fdc28b543b32f72d457f6
[INFO] running `Command { std: "docker" "start" "-a" "b4eb33f2e75ad2ef13a38e98b8658e8a0700863e3c1fdc28b543b32f72d457f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4eb33f2e75ad2ef13a38e98b8658e8a0700863e3c1fdc28b543b32f72d457f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4eb33f2e75ad2ef13a38e98b8658e8a0700863e3c1fdc28b543b32f72d457f6", kill_on_drop: false }`
[INFO] [stdout] b4eb33f2e75ad2ef13a38e98b8658e8a0700863e3c1fdc28b543b32f72d457f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13163c2ef77e1c102572cb06c72002ccce8f882e5dbe4f85861394eb1fc0af96
[INFO] running `Command { std: "docker" "start" "-a" "13163c2ef77e1c102572cb06c72002ccce8f882e5dbe4f85861394eb1fc0af96", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.63s
[INFO] running `Command { std: "docker" "inspect" "13163c2ef77e1c102572cb06c72002ccce8f882e5dbe4f85861394eb1fc0af96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13163c2ef77e1c102572cb06c72002ccce8f882e5dbe4f85861394eb1fc0af96", kill_on_drop: false }`
[INFO] [stdout] 13163c2ef77e1c102572cb06c72002ccce8f882e5dbe4f85861394eb1fc0af96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb0a2d1cb27d0a60b445582a689c5c9293794ebe0f57b0051ada64dc0d13bbd9
[INFO] running `Command { std: "docker" "start" "-a" "eb0a2d1cb27d0a60b445582a689c5c9293794ebe0f57b0051ada64dc0d13bbd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "eb0a2d1cb27d0a60b445582a689c5c9293794ebe0f57b0051ada64dc0d13bbd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb0a2d1cb27d0a60b445582a689c5c9293794ebe0f57b0051ada64dc0d13bbd9", kill_on_drop: false }`
[INFO] [stdout] eb0a2d1cb27d0a60b445582a689c5c9293794ebe0f57b0051ada64dc0d13bbd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ff068e592cbecac84006c867e0e957b009a80ea654ed6e39a89ada16a572341e
[INFO] running `Command { std: "docker" "start" "-a" "ff068e592cbecac84006c867e0e957b009a80ea654ed6e39a89ada16a572341e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/interpreter-01824908b66cdfb2)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ff068e592cbecac84006c867e0e957b009a80ea654ed6e39a89ada16a572341e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff068e592cbecac84006c867e0e957b009a80ea654ed6e39a89ada16a572341e", kill_on_drop: false }`
[INFO] [stdout] ff068e592cbecac84006c867e0e957b009a80ea654ed6e39a89ada16a572341e